JPS6183698U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing the elastic support structure of the rotation fulcrum of the long clamp arm, Fig. 2 is a cross-sectional view showing the clamp cylinder for the long clamp arm, and Fig. 3 is a side view showing the entire roll clamp device.
FIG. 4 is an explanatory view showing the retracting action of the long clamp arm, and FIG. 5 is a sectional view showing a conventional example. 1...Lift bracket, 2...Mast, 3...Clamp holder, 4...Swivel seat bearing, 5...Short clamp arm, 6...Long clamp arm,
7, 8...Support pin, 9,10...Clamp cylinder, 13...Support cylinder, 14...Elastic body, 24...Outer cylinder, 26...Inner cylinder, 29...Viston rod, 30...Compression spring.

Claims (1)

[Scope of utility model registration request] In a roll clamp device comprising a clamp holder equipped with a long clamp arm and a short clamp arm mounted on the front surface of a lift bracket so as to be rotatable in a vertical plane via a swivel seat bearing, the clamp for the long clamp arm is provided. While forming the cylinder into a double cylinder structure,
A compression spring is housed in the inner cylinder of the clamp cylinder to always bias the piston rod in the direction of extension so that the inner end of the piston rod faces a stopper fixed to the inner cylinder with a predetermined gap therebetween; A roll clamp device for a cargo handling vehicle in which a support pin at a rotation fulcrum of a long clamp arm is supported so as to be elastically displaceable in the radial direction by an elastic body housed in a pin support portion formed on the clamp holder side.